Snell is on the list mainly because of April 11, 2010, when Adam Moore committed catcher’s interference on David Murphy twice in one game.

70% of the interference calls on your list are by left-handed hitters, which I think is interesting. Assuming lefties do generate more intereference calls historically (would be interesting to see), I was just theorizing on why that could be. If I think about when interference happens, it tends to be when a batter takes an unusually long swing to make contact with an outside pitch. For left-handed hitters, this would be pitches on the glove side of right-handed catchers. Catchers can reach out further to receive pitches on their glove side since they don’t have to reach across their bodies. So what I’m thinking is the intersection of the glove protruding slightly further forward and the hitter taking an awkwardly long swing would cause catcher’s interference, and that would be a lot more likely with a lefty at the plate than a righty. If it is a structural advantage of left-handed hitters and not a random occurrence attributable to catchers, maybe it should be included in OBP. Of course we’d have to see more data to evaluate this, but I think it would be interesting.